Search
Now showing items 21-30 of 182
Pigmentos nanométricos de alumina dopada com ferro, níquel e manganês
(Universidade Federal de São Carlos, 2006-11-08)
In the recent years, the necessity of ceramic pigments production with new shades and variable distributions of particle size has increased considerably. The color and size of pigment particles are responsible for important ...
Estudo da eletrodeposição de ligas Fe-Ni-Mo e Fe-Ni-W com aplicações tecnológicas
(Universidade Federal de São Carlos, 2008-01-16)
This paper reports a study on the electrodeposition of alloys Fe-Ni-Mo and Ni-Fe-W, the physical characterization and application in the reaction of hydrogen (RDH). The process of deposition and dissolution of alloys were ...
Estudos do crescimento anódico de óxidos e da deposição de apatitas sobre a liga biocompatível Ti-13Nb-13Zr
(Universidade Federal de São Carlos, 2009-10-30)
Studies on the anodic growth of oxide films passivating the biocompatible alloy Ti-13Nb-13Zr (m/m) and the formation of hydroxyapatite (HA) films on these oxides were carried out in this work. The oxides were grown either ...
Estudo do potencial enzimático de micro-organismos endofíticos para a biotransformação de produtos naturais e análogos sintéticos
(Universidade Federal de São Carlos, 2009-11-27)
The endophytic microorganisms Penicillium griseoroseum, Penicillium brasilianum, Aspergillus flavus e Aspergillus aculeatus have shown to be very efficient in order to perform the most diferenciated biotransformation ...
Estudo da corrosão do aço ao carbono em meio de sulfeto
(Universidade Federal de São Carlos, 2009-09-08)
This work presents a study of the 1020 and 1040 carbon steel corrosion in aqueous solution containing dissolved H2S in order to investigate the effect of H2Saq and HSaq species. Some different electrolytes were used: acetic ...
Eletrossíntese, caracterização e testes de compósitos de polipirrol e poli(DMcT) sobre fibra de carbono como catodos de baterias secundárias e eletrodos de supercapacitores
(Universidade Federal de São Carlos, 2009-11-27)
In this work bilayered electrodes made of polypyrrole Ppy and poly(2,5-dimercapto-1,3,4-tiadiazol) poly(DMcT) were produced and characterized on carbon-fiber substrate. To do so, several aspects were investigated: ...
O lúdico em Química : jogos e atividades aplicados ao ensino de Química
(Universidade Federal de São Carlos, 2004-04-01)
In this work games and ludic activities are applied to chemistry teaching. In the introduction, the constructivism aspects of the theories of cognitive development are presented. Then, the ideas and theories of both ludic ...
Novo enfoque no estudo da transição de fase composicional da solução sólida ferroelétrica (Pb,Ca)TiO3
(Universidade Federal de São Carlos, 2006-11-13)
Ferroelectric materials have a vast application in modern industry as data storage devices. Some of this materials, as the ferroelectric oxides class ABO3, have phase transitions with the alteration of of the lattice ...
Aspectos da interação do homem com pesticidas no ambiente: focando a cotonicultura e com ênfase às bordas do Alto Pantanal, Mato Grosso, Brasil.
(Universidade Federal de São Carlos, 2005-10-27)
The interaction man-pesticide-environment (M-P-E), in cotton areas was
characterized and, a laboratorial study on mobility of the pesticide parathion methyl
(PM) into soil columns was developed. Antropic impacts and risk ...
Preparação e caracterização de eletrodos de polímeros condutores sobre carbono vítreo reticulado (RVC) para a aplicação em baterias secundárias.
(Universidade Federal de São Carlos, 2006-03-22)
The general purpose of this work is the optimization of
the conducting polymer deposition on RVC and the use of these electrodes in an allpolymeric
ion-lithium battery, which means an anode and a cathode made of ...